Digital partial discharge measuring system with interference recognition

Author

Buchailla, H. ; Flohr, Th ; Pfeiffer, W.

Author_Institution

Tech. Univ. of Darmstadt, Germany

fYear

1995

fDate

22-25 Oct 1995

Firstpage

376

Lastpage

379

Abstract

This paper deals with a digital PD measuring system especially designed for reliable high-speed testing of large numbers of test specimens. The measuring process is based on a broadband measurement (f _c≈100 MHz) of PD in the time domain followed by a high speed A/D converter (f=1 GHz). Then the signal is transformed to the frequency domain by FFT and the frequency characteristics of the measured pulses are compared with a “standard-PD-spectrum” that has been generated before. So the automatic distinction between interference pulses and PD-signals is possible. The measuring system is described and typical examples of measurements given. The capability of the system to distinguish between PD and interference pulses is shown

Keywords

charge measurement; frequency-domain analysis; insulation testing; interference (signal); partial discharges; quality control; signal processing equipment; FFT; broadband measurement; digital partial discharge measuring system; frequency characteristics; frequency domain transformation; high speed A/D converter; insulation quality; interference recognition; low voltage mass production components; measured pulses; reliable high-speed testing; standard-PD-spectrum; time domain measurement; Character generation; Frequency domain analysis; Frequency measurement; Interference; Partial discharge measurement; Partial discharges; Pulse measurements; System testing; Time measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1995. Annual Report., Conference on

Conference_Location

Virginia Beach, VA

Print_ISBN

0-7803-2931-7

Type

conf

DOI

10.1109/CEIDP.1995.483741

Filename

483741